CN108393831A

CN108393831A - The function fast-open spanner of the high service life of high tenacity

Info

Publication number: CN108393831A
Application number: CN201710067023.8A
Authority: CN
Inventors: 胡厚飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-02-07
Filing date: 2017-02-07
Publication date: 2018-08-14
Anticipated expiration: 2037-02-07
Also published as: CN108393831B

Abstract

The function fast-open spanner of the high service life of high tenacity of the present invention, ontology has the folder that can be connected working substance, arc chute is set in folder, expansion slot and the sliding block that can be slid with respect to sliding slot camber line, folder forms the first clamping jaw with force application plane, folder forms portion of dodging in force application plane, when folder switching working substance makes folder generate flexible deformation, expansion slot increases folder in the effect of elastic limit intramedullary expansion, the end angle between the first positive stress surface and the 6th reversed stress surface of working substance is enable to cross the force application plane of the first clamping jaw and enter portion of dodging, avoid sliding block and the first clamping jaw that from can not bearing to come from the reaction force of working substance and generate destruction, so that function fast-open spanner has high tenacity and high service life.

Description

The function fast-open spanner of the high service life of high tenacity

Technical field

The present invention mainly discloses a kind of function fast-open spanner of the high service life of high tenacity, espespecially when folder bears to come from When the reaction force of switching working substance, the effect of folder flexible deformation can be increased, avoid sliding block and folder that from can not bearing to come from Destruction is generated in the reaction force of working substance.

Background technology

As U.S. Patent No. 4,158,975, U.S. Patent Publication No. the 2008/0066585th, 2010/0071516, No. 2010/0083797 patent, the torsion that the spanner of the above-mentioned revealed open shape of Patent Case can bear is limited, and is Have effects that spine move, it will usually setting can opposite wrench body movement sliding pawl or slide block structure be connected working substance, Under the demand of high torsion, slides pawl or slide block structure generates destruction it is even more impossible to the reaction force for bearing to come from working substance.

For example, when user find switching when torsion deficiency when, can handle cover connect one lengthening metal tube, thereby Increase arm of force when switching, to which the switching operation of high torsion can be carried out.But it is removable in order to which sliding block or sliding pawl etc. is arranged Dynamic structure, it is necessary to open up the structures such as hole, slot to accommodating sliding block or sliding pawl in wrench body, thus reduce the knot of wrench body Structure intensity, so during switching working substance, the reaction force from working substance will be such that sliding pawl or slide block structure generates It destroys.

Furthermore such as No. 2010/0083797 patent in forefront, seating surface (supporting surface 153) top is set The eluding groove there are one concave arc shape is set, when carrying out the switching operation of high torsion, will be produced fracture at concave arc shape eluding groove setting, The problem of destruction.

Traditional open-end wrench designs to bear the job requirements of high torsion, and the rigidity for improving spanner simply is strong Degree, however rigid is blindly improved, this will cause, when rigid is 100%, may arrive just during switching working substance Property intensity 80% to 100% between i.e. can moment fracture, cause the injury of user, this is that the big of hand-held tool is avoided.It is such as above-mentioned The open-end wrench of No. 2010/0083797 patent, will at concave arc shape eluding groove setting moment be broken, not only service life is low, more It may cause the injury of user.

Invention content

The function fast-open spanner technical problem to be solved of the high service life of high tenacity of the present invention is：Traditional open spanner Hand can not be born under the working environment of high torsion at the removable frames such as sliding block or sliding pawl and concave arc shape eluding groove setting Come from reaction force caused by switching working substance and generates destruction.

Therefore, the present invention provides a kind of function fast-open spanner of the high service life of high tenacity comprising an ontology, one It can be relative to the sliding block and an elastic device being set between the ontology and the sliding block that ontology camber line slides.

The ontology includes a grip part and a folder for being set to the grip part one end, and the folder is in contrast to the gripping The one end in portion forms first clamping jaw being separated from each other and second clamping jaw, and the folder is in first clamping jaw and second folder A jaw larynx is formed between pawl, the space that first clamping jaw, second clamping jaw and the jaw larynx are surrounded, which is formed, to be suitable for for work One of object entrance pulls mouth, and the first positive stress surface of working substance and the first reversed stress surface are coplanar, and the first of working substance is reversed End angle is formed with 120 degree of angle between stress surface and the 6th reversed stress surface, which has pulls mouth in face of this And towards a force application plane of second clamping jaw, which forms a portion of dodging between the force application plane and the jaw larynx, One arc chute is set in the folder, which is set to the side that second clamping jaw pulls mouth relative to this, and one is led Draw that column is fixed to be placed in the arc chute, an expansion slot is more set in the folder, which is set to the first clamping jaw phase The side of mouth is pulled for this.

The sliding block can camber line be slidingly arranged at the arc chute, the sliding block have a reciprocal first end and one There is the first end of a second end, the sliding block emergence to go out a first switching face outside the arc chute, which is arranged one The guide channel of arc-shaped shape in the guide channel is extended through for the guide posts, is detached from sliding slot, which has one to prevent limited slip block A abutment end, when the sliding block is in free position, the abutment end of the guide channel is contacted with the guide posts.

The elastic device is set between the ontology and the sliding block, and the sliding block is enable to automatically return to free position.

When the folder is not yet connected working substance, which is located at free position, this is stretched into the first switching face of the sliding block It pulls in mouth, and the force application plane of the first switching face of the sliding block and first clamping jaw is in non-parallel state.

When the folder is connected working substance and non-switching working substance, which is connected to the force application plane of first clamping jaw The first end of the positive stress surface of the first of working substance, the sliding block is connected to the 4th positive stress surface of working substance, the expansion groove face To the second reversed stress surface of working substance.

When the folder switching working substance makes the folder generate flexible deformation, which increases the folder in elastic limit The effect of intramedullary expansion so that the end angle between the positive stress surface of the first of working substance and the 6th reversed stress surface can cross this The force application plane of first clamping jaw and into the portion of dodging, avoid the sliding block and first clamping jaw that from can not bearing to come from working substance Reaction force and generate destruction.

Description of the drawings

Fig. 1 is the partial perspective outside drawing of the function fast-open spanner of the high service life of high tenacity of the present invention.

Fig. 2 is the partial perspective exploded view of the function fast-open spanner of the high service life of high tenacity of the present invention.

Fig. 3 is the partial section view of the function fast-open spanner of the high service life of high tenacity of the present invention, indicates that sliding block is located at certainly By position.

Fig. 3 A are the schematic diagram of the function fast-open spanner of the high service life of high tenacity of the present invention, indicate that lubricating cream is set to Expansion slot.

Fig. 4 is the state diagram of the function fast-open spanner of the high service life of high tenacity of the present invention, indicates that folder is connected working substance And not yet switching working substance.

Fig. 4 A are the enlarged drawing that refining coil encloses place in Fig. 4, indicate to form standby pressure angle between sliding block and working substance.

Fig. 5 is the continuity of Fig. 4, indicates that working substance is driven by folder and is clockwise 10 degree compared to Fig. 4.

Fig. 6 is the continuity of Fig. 5, indicates folder switching working substance and elastic dilatation.

Fig. 7 is the continuity of Fig. 6, indicates that working substance is driven by folder and is clockwise 10 degree compared to Fig. 5.

Fig. 8 is the continuity of Fig. 7, indicates folder switching working substance and elastic dilatation.

Fig. 9 is the continuity of Fig. 8, indicates that working substance is driven by folder and is clockwise 10 degree compared to Fig. 7.

Figure 10 is the continuity of Fig. 9, indicates folder switching working substance and elastic dilatation.

Figure 11 is the continuity of Figure 10, indicates that the stress surface of working substance crosses the force application plane of the first clamping jaw and enters and dodge Portion.

Figure 12 is the continuity of Figure 11, and after indicating the reaction force removal from working substance, folder elasticity is restored back to the shape of Fig. 4 Shape.

Reference sign：10- open-end wrench；20- ontologies；The grip parts 21-；22- folders；221- dodges portion；23- first Clamping jaw；231- force application planes；The second clamping jaws of 24-；25- jaw larynxs；251- guiding faces；26- pulls mouth；27- arc chutes；271- slides Wall；272- through holes；The first supporting walls of 273-；The second supporting walls of 274-；28- guide posts；29- expansion slots；291- expands wall； 292- flanges；The first stop walls of 293-；The second stop walls of 294-；295- lubricating creams；30- sliding blocks；The top surfaces 301-；The bottoms 302- Face；303- first ends；304- second ends；31- slide surfaces；The the first switching faces 32-；The the second switching faces 33-；34- avoidance unit；35- Guide channel；351- abutment ends；The tops 352- tug end；The standby pressure spaces 36-；37- alveolus；38- alar parts；39- expanding surfaces；40- elasticity fills It sets；401- stores power unit；The first feet of 402-；403- crus secundas；404- compression units；41- elastomers；90- working substances；91A- first Positive stress surface；The first reversed stress surfaces of 91B-；The positive stress surfaces of 92A- second；The second reversed stress surfaces of 92B-；93A- thirds Positive stress surface；The reversed stress surface of 93B- thirds；The positive stress surfaces of 94A- the 4th；The 4th reversed stress surfaces of 94B-；95A- the 5th Positive stress surface；The 5th reversed stress surfaces of 95B-；The positive stress surfaces of 96A- the 6th；The 6th reversed stress surfaces of 96B-；The ends C- angle； D28- diameters；W35- groove widths；H30- height；AL36- arc length；D90- diagonal distances；SD- minimum ranges；The standby pressure angles of θ-；Between G- Gap；P231- extended surfaces；P32- extended surfaces；P92A- extended surfaces；α-angle；β-angle.

Specific implementation mode

Related the technology used in the present invention, means and its effect hereby lift a preferred embodiment and schema are coordinated to be described in detail such as Afterwards, this is not limited only for explanation in patent application by such structure.

Referring to figs. 1 to Fig. 3, the function fast-open spanner 10 of the high service life of high tenacity of the present invention includes an ontology 20, one A sliding block 30 and an elastic device 40；Wherein：

There are one grip part 21 and a folders 22 for being set to 21 one end of grip part for the tool of ontology 20.Folder 22 can be connected Working substance 90 (such as Fig. 4), working substance 90 can be bolt hexagon-head, working substance 90 be bolt hexagon-head when, six by Power face with the six o'clock direction annular arrangement counterclockwise of hexagon-head, be sequentially the first forward direction stress surface 91A to the 6th it is positive by Power face 96A similarly also has the first reversed reversed stress surface 96B of stress surface 91B to the 6th, therefore the positive stress of same number Face and reversed stress surface are coplanar, such as the first forward direction stress surface 91A and the first reversed stress surface 91B coplanar, the 4th positive stress Face 94A and the 4th reversed stress surface 94B are coplanar, and the 5th forward direction stress surface 95A and the 5th reversed stress surface 95B is coplanar, and two is adjacent Distinction number positive stress surface and reversed stress surface between then with 120 degree of angle and form end angle C, such as first just To formation end angle C, the second reversed stress surface 92B between the reversed stress surface 96B of stress surface 91A and the 6th and third forward direction stress End angle C is formed between the 93A of face, and end angle C, user's energy are formed between the positive stress surface 96A of the 5th reversed stress surface 95B and the 6th It is enough gripped on grip part 21 and pulls ontology 20, ontology 20 is made to generate torque and allow folder 22 using the axle center of working substance 90 as the center of circle Rotation, achievees the effect that switching working substance 90.

Folder 22 forms first clamping jaw 23 being separated from each other and second clamping jaw in contrast to one end of grip part 21 24, the first clamping jaw 23 and the second clamping jaw 24 can receive generated reaction force when switching working substance 90.First clamping jaw 23 with Second clamping jaw, 24 system is relative to each other and integrally formed both sides for being set to folder 22, the second clamping jaw 24 are had in the width direction Width be more than the first clamping jaw 23 in the width direction possessed by width, therefore the first clamping jaw 23 not will produce phase with the second clamping jaw 24 To displacement relation, make folder 22 that there is good structural strength, therefore the torsion that folder 22 is born can be increased, and in height Under the operating condition of torsion demand, the first clamping jaw 23 meets with stresses, i.e., switching working substance 90 and generate reaction force after, can Compared to 24 leading flexible deformation of the second clamping jaw.

Folder 22 forms a jaw larynx 25 between the first clamping jaw 23 and the second clamping jaw 24, jaw larynx 25, the first clamping jaw 23 with The space that second clamping jaw 24 is surrounded essentially forms one and pulls mouth 26 in hexagonal configuration, and folder 22 can be along working substance 90 Radial direction it is mobile and allow working substance 90 to enter and pull in mouth 26 or folder 22 also can be along the axis for being parallel to working substance 90 Line direction is mobile and allows working substance 90 to enter and pulls in mouth 26.Since the first clamping jaw 23 and the second clamping jaw 24 not will produce opposite position Shifting relationship, so the size for pulling mouth 26 can not be adjusted.

First clamping jaw 23 has in face of pulling mouth 26 and towards a force application plane 231 of 24 end of the second clamping jaw, exerting a force flat Face 231 can correspond to the first positive stress surface 91A of working substance 90, and jaw larynx 25 has a guiding face in face of pulling mouth 26 251, guiding face 251 can be flat face, and one of the guiding face 251 of jaw larynx 25 and the force application plane 231 of the first clamping jaw 23 prolongs There are one the angle αs more than 120 degree for tool between stretching face P231, further, the guiding face 251 of jaw larynx 25 and the first clamping jaw 23 Force application plane 231 an extended surface P231 between angle α can be more than 130 degree and be less than 140 degree.Please refer to Fig. 4, jaw The guiding face 251 of larynx 25 can correspond to the second positive stress surface 92A of working substance 90, and guiding face 251 and the second forward direction by A clearance G can be formed between the 92A of power face, during avoiding switching working substance 90, jaw larynx 25 applies force to work Object 90 and force the disengaging of working substance 90 to pull mouth 26, between an extended surface P92A and guiding face 251 of the second positive stress surface 92A An angle β more than 0 degree is formed, by such setting so that guiding face 251 can be in the process of switching working substance 90 In, guide working substance 90 end angle C, allow working substance 90 and pull mouth 26 being capable of swimmingly relative motion.

Folder 22 forms a portion of dodging between the force application plane 231 of the first clamping jaw 23 and the guiding face 251 of jaw larynx 25 221, portion 221 of dodging is suitable for allowing the first positive stress surface 91A, the first reversed stress surface 91B and the 6th of working substance 90 anti- Enter to stress surface 96B.

One arc chute 27 is set in folder 22, and arc chute 27 is set to the second clamping jaw 24 relative to pulling the one of mouth 26 Side, there are one concave arc shapes to slide wall 271 for the tool of arc chute 27, and the sliding wall 271 of arc chute 27 does not open up other pore space structures And complete concave arc planar is presented, it is ensured that the structural strength of the second clamping jaw 24, enables folder 22 to bear high torsion Switching works.And the center of circle position for sliding 271 cancave cambered surface of wall is being pulled in mouth 26, therefore the processing of arc chute 27 is merely with a milling Knife can be completed, and process structural strength simple and quick, of low cost and can ensuring folder 22.

One expansion slot 29 is more set in folder 22, and expansion slot 29 is set to the first clamping jaw 23 relative to pulling the one of mouth 26 Side, expansion slot 29 can be arc-shaped and be connected with arc chute 27, and therefore, expansion slot 29 is so that arc chute 27 is adjacent to expansion The one end for opening slot 29 is not connected to internal face of the jaw larynx 25 in face of pulling mouth 26, thereby increases the structural strength of folder 22, expansion slot 29 There are one the expansion wall 291 of concave arc shape, expansion walls 291 not open up other pore space structures and be in concave arc planar for tool, it is ensured that The structural strength of first clamping jaw 23, and also position is being pulled in mouth 26 in the center of circle of expansion 291 cancave cambered surface of wall, therefore the processing of expansion slot 29 It can also be equally different from merely with one and open up the milling cutter of 27 milling cutter size of arc chute and can be completed, processing is simple and quick, Structural strength that is of low cost and can ensuring folder 22.The curvature of sliding wall 271, institute can be more than by expanding the curvature of wall 291 Milling cutter size to open up expansion slot 29 is less than the milling cutter size for opening up arc chute 27.

Folder 22 opens up a circular through hole 272, and there are one be located at 271 top of sliding wall for the tool of arc chute 27 First supporting walls 273 and one are located at 271 lower section of sliding wall and relative to the second supporting walls 274 of the first supporting walls 273, and first Supporting walls 273 and the second supporting walls 274 are parallel to each other, and through hole 272 is close to jaw larynx 25 and passes through the first supporting walls 273 and second Supporting walls 274.Through hole 272 can be in conjunction with a cylindrical guide posts 28, and the both ends of guide posts 28 are individually fixed in first In the through hole 272 of supporting walls 273 and the second supporting walls 274, make guide posts 28 are fixed fixed to be placed in arc chute 27 It is interior.There are one diameter D28 for the tool of guide posts 28.

There are one the first stop walls 293 and one that are located at 291 top of expansion wall to be located under expansion wall 291 for the tool of expansion slot 29 Just and relative to the second stop wall 294 of the first stop wall 293, the first stop wall 293 and the second stop wall 294 are parallel to each other. By the setting of the first stop wall 293 and the second stop wall 294, during switching working substance 90, the first stop wall 293 with It is capable of the end angle C of backstop working substance 90 and working substance 90 is avoided to enter expansion slot in the side that second stop wall 294 faces to pull mouth 26 29。

Due to guiding face 251 be flat face, and the two opposite sides of guiding face 251 be separately connected the side in the portion of dodging 221 with And first, second stop wall 293,294 side so that jaw larynx 25, which faces to pull the internal face of mouth 26, generally constitutes a smooth-going Do not have at shape suddenly change without the surface of lofty corner angle, that is, surface, under the operating condition of high torsion demand, keeps away Exempt from the first clamping jaw 23 and generate local stress to skyrocket phenomenon, effectively avoid the first clamping jaw 23 under the operating condition of high torsion in response to Power concentration is produced fracture, is destroyed.

Further, since the internal face that jaw larynx 25 faces to pull mouth 26 generally constitutes a smooth-going without the table of lofty corner angle Face, during switching working substance 90, even if the end angle C contact jaws larynx 25 of working substance 90 also can in face of pulling the internal face of mouth 26 Enough make working substance 90 and pulls the swimmingly relative motion of mouth 26.

In this present embodiment, the first supporting walls 273 and 293 co-walled face of the first stop wall and positioned at sliding wall 271 with expansion The top of wall 291, the second supporting walls 274 and 294 co-walled face of the second stop wall and positioned at sliding wall 271 with expansion wall 291 under Side, makes arc chute 27 and 29 having the same spacing of expansion slot.

For expansion slot 29 in forming a flange 292 with the connection of arc chute 27, flange 292 can ensure folder 22 Internal structural strength, flange 292 is so that one end that arc chute 27 is adjacent to expansion slot 29 is not connected to jaw larynx 25 in face of pulling mouth 26 internal face avoids opening up arc chute 27 and reduces the structural strength of folder 22 after expansion slot 29.On the other hand, one is prolonged Stretching line generally can be by the end between the positive stress surface 96A of the 5th reversed stress surface 95B of working substance 90 and the 6th End angle C between angle C, the second reversed stress surface 92B and third forward direction stress surface 93A and flange 292, therefore flange 292 is substantially On position be located at the middle position of folder 22, therefore it is two that folder 22 is slightly divided to by flange 292 along the width direction of folder 22 A part, it includes the first part with the first clamping jaw 23 and the second parts with the second clamping jaw 24.And by expansion 292 installation position of flange of slot 29, more so that expansion slot 29 increases folder 22 and has the first part of the first clamping jaw 23 in elasticity The effect of limit intramedullary expansion.

30 system of sliding block can camber line sliding be set to arc chute 27 and cannot be introduced into expansion slot 29, sliding block 30 have each other Opposite first end 303 and second end 304, the first end 303 of sliding block 30 and second end 304 can switching working substance 90, sliding block 30 can drive working substance 90 to rotate or in the outside Relative sliding of working substance 90.The substantially arc-shaped bulk of sliding block 30, and The side of sliding block 30 forms the slide surface 31 of a convex, and the slide surface 31 of sliding block 30 can be in the sliding wall of arc chute 27 It is slided on 271, sliding block 30 is made to generate opposite camber line sliding relationship with folder 22.The slide surface 31 of sliding block 30 does not open up other holes Hole structure and complete convex arc planar is presented, it is ensured that the structural strength of sliding block 30, enables sliding block 30 to bear high torsion Switching work.

The curvature of the slide surface 31 of sliding block 30 is equal to the curvature of the sliding wall 271 of arc chute 27, therefore the sliding of sliding block 30 Face 31 can swimmingly slide on the sliding wall 271 of arc chute 27, moreover, when sliding block 30 is born from the anti-of working substance 90 When active force, because slide surface 31 with sliding the curvature of wall 271 it is identical, therefore slide surface 31 can large area the anti-work by working substance 90 Sliding wall 271 is firmly passed to, disperses the stress of sliding block 30 and avoids the problem that stress concentration, opposite can improve ontology 20 The torsion that sliding block 30 can bear when switching.

Fig. 3 A are please referred to, a lubricating cream 295 can be arranged in expansion slot 29 so that lubricating cream 295 is steadily set to In expansion slot 29 and coated on expansion wall 291 and flange 292, due to flange 292 be located at expansion slot 29 in arc chute 27 Connection, therefore when sliding block 30 is slided relative to 27 camber line of arc chute, the lubricating cream 295 for being located at flange 292 can It is drawn and the sliding wall of entrance slide surface 31 and arc chute 27 by the slide surface 31 of sliding block 30 from the second end 304 of sliding block 30 Between 271, the resistance to sliding that is effectively reduced between sliding block 30 and arc chute 27.By reduction sliding block 30 and arc chute 27 Between resistance to sliding, under the operating condition of high torsion demand, when switching working substance 90 leads to the first 23 flexible deformation of clamping jaw, It avoids because the resistance to sliding between sliding block 30 and arc chute 27 is excessive, and so that stress is excessively concentrated on sliding block 30 and generate disconnected It splits.

There is the first end 303 of sliding block 30 emergence to go out a first switching face 32 outside arc chute 27, and the of sliding block 30 There is emergence to go out a second switching face 33 outside arc chute 27,33 shape of the first switching face 32 and the second switching face at two ends 304 At in side of the sliding block 30 in contrast to slide surface 31.One can be formed between first switching face 32 and the second switching face 33 to be more than 100 degree of angle, sliding block 30 form an avoidance unit 34 between the first switching face 32 and the second switching face 33, and avoidance unit 34 is suitable Enter in allowing the reversed stress surface 93B of the third of working substance 90.

The top of sliding block 30 forms a top surface 301, and 301 system of top surface is contacted with the first supporting walls 273, the lower section of sliding block 30 A bottom surface 302 is formed, 302 system of bottom surface is contacted with the second supporting walls 274.Top surface 301 is parallel to each other with bottom surface 302 and makes sliding block There are one height H30 for 30 tools.In the case where not discussing that tolerance is reserved in male and female cooperation, the height H30 of sliding block 30 is less than or equal to The spacing of arc chute 27 enables the top surface 301 of sliding block 30 with bottom surface 302 by the first supporting walls 273 and the second supporting walls 274 Support symmetrical above and below.Since the top surface 301 of sliding block 30 and bottom surface 302 are by the first supporting walls 273 and the second about 274 supporting walls Symmetrical support, therefore sliding block 30 will not lead to the problem of shaking when camber line in arc chute 27 slides, and open spanner can be improved Hand 10 uses upper stability.

A guide channel 35 for running through top surface 301 and bottom surface 302,35 arc-shaped shape of guide channel is arranged in sliding block 30, and guides The curvature of slot 35 is identical as the sliding curvature of wall 271 of arc chute 27.Since guide channel 35 runs through top surface 301 and bottom surface 302, Therefore for slot height etc. in the height of sliding block 30, it is guiding that guide channel 35, which has there are one groove width W35, groove width W35, there are one the tools of guide channel 35 The big cambered surface radius of slot 35 subtracts the distance of small cambered surface radius.In the case where not considering that tolerance is reserved in male and female cooperation, guide channel 35 groove width W35 is greater than or equal to the diameter D28 of guide posts 28.Tall and big 1.5 times in groove width W35 of the slot of guide channel 35, also may be used To say, the groove width W35 of guide channel 35 is less than high 0.66 times of slot.In the present embodiment, the slot height of guide channel 35 can be more than groove width 2 times of W35, that is, the groove width W35 of guide channel 35 are less than high 0.5 times of slot.

In guide channel 35 is extended through for guide posts 28, arc chute 27 is detached to prevent limited slip block 30.Due to the cunning of sliding block 30 Shifting face 31 is all identical as the sliding curvature of wall 271 of arc chute 27 as the curvature of guide channel 35, therefore the slide surface 31 of sliding block 30 When carrying out camber line sliding motion on the sliding wall 271 of arc chute 27, in the guide channel 35 and arc chute 27 of sliding block 30 The case where capable of also being generated swimmingly with respect to camber line shuffle effect between guide posts 28, not having interference, occurs.

There are one abutment ends 351 and top tug end 352 for the tool of guide channel 35, when sliding block 30 is in free position, guide channel 35 abutment end 351 is contacted with guide posts 28, and the top of guide channel 35 tug end 352 is then contacted with elastic device 40.Guide channel 35 It does not open up other pore space structures inside, effectively avoids the problem that stress concentration, it is ensured that the structural strength of sliding block 30, makes sliding block 30 can bear the switching work of high torsion.Simultaneously as all not opening up other in the slide surface 31 and guide channel 35 of sliding block 30 Pore space structure, therefore the processing cost of sliding block 30 can effectively reduce so that product itself, which has, bears high torsion and price is low Honest and clean advantage can be utilized by industry.

Sliding block 30 is in 32 recessed at least one V-shaped alveolus 37 of the first switching face, and in this present embodiment, sliding block 30 can Recessed two alveolus 37, alveolus 37 can improve the first switching face 32 of sliding block 30 and the 4th positive stress surface of working substance 90 Frictional force between 94A.

The first end 303 of sliding block 30 each extends over an alar part 38 in top surface 301 and bottom surface 302, and alar part 38 has inside With outside, the inside of alar part 38 can switching working substance 90, open-end wrench 10 can make working substance 90 with entire through alar part 38 The height on head is contacted with the first switching face 32 and the alar part 38 of sliding block 30, increases the contact between working substance 90 and sliding block 30 The outside of area, alar part 38 does not contact ontology 20 completely, and alar part 38 is made not generate frictional resistance between ontology 20, allows sliding block 30 reciprocating motion it is more smooth with it is flexible, the problem of being not susceptible to block.

The both sides in the first switching face 32 respectively extend an expanding surface 39, and the inside of alar part 38 forms expanding surface 39, expanding surface 39 and first switching face 32 be formed on the same face, when 22 switching working substance 90 of folder, the outside of alar part 38 does not contact folder completely Jaw 22, make the overhanging action of sliding block 30 and Retraction it is all quite smooth with it is flexible, the problem of being not susceptible to block.

Elastic device 40 is set between ontology 20 and sliding block 30 and cannot be introduced into expansion slot 29, the both ends of elastic device 40 It is resisted against respectively between guide posts 28 and the top tug end 352 of guide channel 35, sliding block 30 is enable to automatically return to free position.Bullet Property device 40 include an elastomer 41 being set in guide channel 35, elastomer 41 rear has be set in guide channel 35 One height, at this point, the height of elastomer 41 is high no more than the slot of guide channel 35, the height of elastomer 41 is more than guide channel 35 Groove width W35, and guide channel 35 slot of the height of elastomer 41 more than 0.5 times is high.In this way, being set to the elasticity in guide channel 35 After the height of body 41 meets above-mentioned condition, elastomer 41 would not arbitrarily overturning deviates original position in guide channel 35, can effectively keep away Exempt from sliding block 30 and loses the effect for automatically returning to free position.

In the present embodiment, elastomer 41 can be Z-type shrapnel, and at least one sheet metal is arranged between the both ends of elastomer 41 The storage power unit 401 of shape, stores power unit 401 substantially and is in the cross section structure of V-shape, 401 system of storage power unit of elastomer 41 by One the first foot, 402, crus secundas 403 and 404 institute of compression unit being set between the first foot 402 and crus secunda 403 Composition.Compression unit 404 can store the first foot 402 with crus secunda 403 by compressed energy, and storage power unit 401 is made to have bullet Property reset capability.Each the first foot 402 for storing power unit 401 is connected to another crus secunda 403 for storing power unit 401 so that Each compression unit 404 for storing power unit 401 has elastic reset ability.First foot 402 of 41 one end of elastomer is connected to The crus secunda 403 of guide posts 28,41 other end of elastomer is connected to the top tug end 352 of guide channel 35, keeps sliding block 30 automatic Return back to free position.

When folder 22 is not yet connected working substance 90 (such as Fig. 3), sliding block 30 is located at free position, the first switching of sliding block 30 Face 32, which is stretched into, pulls in mouth 26.And the first switching face 32 of sliding block 30 and the force application plane 231 of the first clamping jaw 23 are in non-parallel state. At the same time (when folder 22 is not yet connected working substance 90), the abutment end 351 of guide channel 35 is contacted with guide posts 28.

It can be seen in figure 3 that the extension straight line L231 of extension the straight line L32 and force application plane 231 in the first switching face 32 It is in non-parallel state each other, therefore the extension straight line L231 of the extension straight line L32 in the first switching face 32 and force application plane 231 will Intersection, grip part 21 of the intersection point far from ontology 20 of intersection.

It can be seen from figure 4 that when folder 22 is connected working substance 90 and non-switching working substance 90, folder 22 is with the first folder The force application plane 231 of pawl 23 is connected to the first positive stress surface 91A of working substance 90, and the first end 303 of sliding block 30 is connected to work The positive stress surface 94A of the 4th of crop 90.At the same time (when folder 22 is connected working substance 90 and non-switching working substance 90), lead A standby pressure space 36 is generated between the abutment end 351 and guide posts 28 of approaching channel 35, standby pressure space 36 can be in 22 elasticity of folder The first end 303 of sliding block 30 is set still to be connected to the 4th positive stress surface 94A of working substance 90 when expansion.Due to the first of sliding block 30 Switching face 32 and the second switching face 33 have the angle more than 100 degree, therefore standby pressure space 36 can be when 22 elastic dilatation of folder The first switching face 32 of sliding block 30 is set still to be connected to the 4th positive stress surface 94A of working substance 90.

There are one arc length AL36, the arc length AL36 in standby pressure space 36 to have to be larger than working substance 90 and carry out for standby pressure space 36 tool Allow the dimensional tolerance generated when processing.That is, not considering working substance 90 in same specification size occurred In the case of slightly discrepant dimensional tolerance, the arc length AL36 in standby pressure space 36 has to be larger than the dimensional tolerance of working substance 90.In this way, Standby pressure space 36, which can effectively reach the when of allowing 22 elastic dilatation of folder, makes the first switching face 32 of sliding block 30 still be connected to work The effect of the positive stress surface 94A of the 4th of object 90.More preferably, the arc length AL36 in standby pressure space 36 can be more than 35 groove width of guide channel The half of W35, that is, the arc length AL36 in standby pressure space 36 is more than the half of 28 diameter D28 of guide posts.

With reference to Fig. 4, the present embodiment is the pulling in mouth 26 into folder 22 of working substance 90 using hex bolts form, enables folder Jaw 22 is connected to the first positive stress surface 91A of working substance 90 with the force application plane 231 of the first clamping jaw 23, and makes the of sliding block 30 One end 303 is connected to the 4th positive stress surface 94A of working substance 90,

Dodge portion 221 allow 90 first reversed stress surface 91B of working substance enter.At the same time, it can be seen that standby pressure space 36 are present between the abutment end 351 and guide posts 28 of 30 guide channel 35 of sliding block, moreover, the arc length AL36 in standby pressure space 36 is more than Dimensional tolerance of the working substance 90 under its specification.

When working substance 90 enters when pulling in mouth 26 of folder 22,30 first end 303 of sliding block is pushed by working substance 90, makes sliding block Elastic device 40 in 30 generates compressive deformation, allows sliding block 30 that can generate camber line movement relative to ontology 20, until working substance Second switching face 33 of 90 contact slippers 30, at this time sliding block 30 the first of sliding block 30 can be made to pull by the pushing tow of elastic device 40 Turn the 4th positive stress surface 94A that face 32 is connected to working substance 90, forming face contact.Arc chute 27 slightly faces working substance 90 Third is positive, reversed stress surface 93A, 93B and the 4th positive, reversed stress surface 94A, 94B, and expansion slot 29 faces work Second reversed stress surface 92B of object 90, due to the positive stress surface 91A of the 4th forward direction stress surface 94A of working substance 90 and first that This is parallel, therefore the first switching face 32 of sliding block 30 is generally close to parallel with the force application plane 231 of the first clamping jaw 23.Due to jaw larynx There is the angle α more than 120 degree between the extended surface P231 of the force application plane 231 of 25 guiding face 251 and the first clamping jaw 23, and Angle β of the formation one more than 0 degree between the extended surface P92A and guiding face 251 of second positive stress surface 92A, therefore guiding face Clearance G between 251 and the second positive stress surface 92A of working substance 90 allows jaw larynx 25 not contact working substance 90, avoids switching work During crop 90, jaw larynx 25 applies force to working substance 90 and the disengaging of working substance 90 is forced to pull mouth 26.

Please coordinate Fig. 4 A simultaneously, when folder 22 is connected working substance 90 and non-switching working substance 90, the first end of sliding block 30 303 are connected to the 4th positive stress surface 94A of working substance 90, make the 4th of the first switching face 32 of sliding block 30 and working substance 90 just To one standby pressure angle theta of formation between stress surface 94A.Standby pressure angle theta is more than 2 degree and can be less than 5 degree, that is to say, that sliding block There is the angle less than 118 degree between 30 the first switching face 32 and the second switching face 33.Standby pressure angle theta can be in 22 bullet of folder Property expansion when, allow ontology 20 and sliding block 30 gradually to be rotated clockwise relative to working substance 90, make the first switching of sliding block 30 Face 32 remains to the 4th positive stress surface 94A for being connected to working substance 90.

Please continue to refer to Fig. 5, indicate that working substance 90 is driven by folder 22 and is clockwise 10 degree compared to Fig. 4.This When user pull grip part 21 towards 23 direction of the first clamping jaw along folder 22, so that folder 22 is rotated with the center of circle of working substance 90.Make The active force that user is applied passes to the first positive stress surface of working substance 90 via the force application plane 231 of the first clamping jaw 23 91A, while the active force that is applied of user is also passing to the 4th of working substance 90 just via the first switching face 32 of sliding block 30 To stress surface 94A, so working substance 90 can be made to be rotated by the drive of folder 22.In this operating process, sliding block 30 Second switching face 33 is connected to the third forward direction stress surface 93A of working substance 90, have the effect of auxiliary belt start building crop 90 rotation.

Due to the first clamping jaw 23 be it is integrally formed be set to folder 22, therefore the force application plane 231 of the first clamping jaw 23 can The effective reaction force for bearing the positive stress surface 91A of working substance 90 first.Again since the second clamping jaw 24 is integrally formed sets It is placed in folder 22, and the slide surface 31 of sliding block 30 and the sliding wall 271 of arc chute 27 all do not open up other holes, sliding block 30 Slide surface 31 is identical as 271 curvature of sliding wall of arc chute 27, is contact of the face with face, therefore the first switching face 32 of sliding block 30 The reaction force of the positive stress surface 94A of working substance 90 the 4th can be effectively born, therefore, open-end wrench 10 of the invention will Enough bear the switching operation of high torsion.

Second switching face 33 of sliding block 30 is connected to the third forward direction stress surface 93A of working substance 90, due to the second clamping jaw 24 Be it is integrally formed be set to folder 22, and the slide surface 31 of sliding block 30 and the sliding wall 271 of arc chute 27 all do not open up it His hole, the slide surface 31 of sliding block 30 is identical as 271 curvature of sliding wall of arc chute 27, is contact of the face with face, therefore sliding block 30 the second switching face 33 can effectively bear the reaction force of 90 third forward direction stress surface 93A of working substance, therefore the present invention Open-end wrench 10 will bear the switching operation of high torsion.

Please continue to refer to Fig. 6, it is the continuity of Fig. 5, indicates under the demand of high torsion, user pulls grip part 21, So that folder 22 is rotated with the center of circle of working substance 90, folder 22 is caused to be started elastic change by the reaction force from working substance 90 Shape, reaction force suffered by folder 22 is still less than its elastic limit at this time.Since the second clamping jaw 24 is possessed wide in the width direction It spends and is more than the first clamping jaw 23 possessed width in the width direction, therefore 23 leading flexible deformation of the first clamping jaw, lead to expansion slot 29 The curvature of expansion wall 291 become smaller, but still greater than 271 curvature of sliding wall of arc chute 27, at this time the first switching of sliding block 30 Face 32 is connected to the 4th positive stress surface 94A of working substance 90, and the second switching face 33 of sliding block 30 is connected to the of working substance 90 Three positive stress surface 93A, and the force application plane 231 of the first clamping jaw 23 abuts the first positive stress surface 91A of working substance 90, makes folder Jaw 22 remains to firmly be connected and switching working substance 90, and expansion slot 29 faces the second reversed stress surface 92B of working substance 90, by Angle α between the extended surface P231 of the force application plane 231 of the guiding face 251 of jaw larynx 25 and the first clamping jaw 23 more than 120 degree, with And the clearance G between guiding face 251 and the second positive stress surface 92A of working substance 90 so that jaw larynx 25 does not contact working substance 90, During avoiding switching working substance 90, jaw larynx 25 applies force to working substance 90 and the disengaging of working substance 90 is forced to pull mouth 26, Auxiliary folder 22 is firmly connected working substance 90.Portion 221 of dodging allows the first reversed stress surface 91B of working substance 90 to enter.

Be the continuity of Fig. 6 please continue to refer to Fig. 7, indicate working substance 90 by folder 22 drive and compared to Fig. 5 by up time Needle rotates 10 degree.Folder 22 is continued flexible deformation by the reaction force from working substance 90, counter suffered by folder 22 at this time to make Firmly still less than its elastic limit, the flexible deformation of especially the first clamping jaw 23 persistently becomes larger so that the expansion wall of expansion slot 29 291 curvature persistently becomes smaller, that is, is less than the curvature that wall 291 is expanded in Fig. 6, but bent still greater than the sliding wall of arc chute 27 271 Rate, at this time the first switching face 32 of sliding block 30 be connected to the 4th positive stress surface 94A of working substance 90, the second switching of sliding block 30 Face 33 is connected to the third forward direction stress surface 93A of working substance 90, and the force application plane 231 of the first clamping jaw 23 abuts working substance 90 First positive stress surface 91A, makes folder 22 remain to firmly be connected simultaneously switching working substance 90, expansion slot 29 is in face of working substance 90 Second reversed stress surface 92B, by the extended surface P231 of the force application plane 231 of the guiding face 251 and the first clamping jaw 23 of jaw larynx 25 Between clearance G between angle α more than 120 degree and the second positive stress surface 92A of guiding face 251 and working substance 90, make Jaw larynx 25 does not contact working substance 90, during avoiding switching working substance 90, jaw larynx 25 apply force to working substance 90 and The disengaging of working substance 90 is forced to pull mouth 26, auxiliary folder 22 is firmly connected working substance 90.Portion 221 of dodging allows the of working substance 90 One reversed stress surface 91B enters.

Please continue to refer to Fig. 8, it is the continuity of Fig. 7, indicates under the demand of higher torsion, user pulls grip part 21, so that folder 22 is rotated with the center of circle of working substance 90, folder 22 is caused to be continued bullet by the reaction force from working substance 90 Property deformation, at this time reaction force suffered by folder 22 still less than its elastic limit, the especially flexible deformation of the first clamping jaw 23 continue Become larger so that the curvature of the expansion wall 291 of expansion slot 29 persistently becomes smaller, that is, is less than the curvature that wall 291 is expanded in Fig. 7, but still big In 271 curvature of sliding wall of arc chute 27, the first switching face 32 of sliding block 30 is connected to the 4th positive of working substance 90 at this time The second switching face 33 of stress surface 94A, sliding block 30 are connected to the third forward direction stress surface 93A of working substance 90, and the first clamping jaw 23 Force application plane 231 abut the first positive stress surface 91A of working substance 90, make folder 22 remain to firmly be connected and switching work Object 90, expansion slot 29 faces the second reversed stress surface 92B of working substance 90, by the guiding face 251 and the first clamping jaw of jaw larynx 25 Angle α and guiding face 251 and the second of working substance 90 between the extended surface P231 of 23 force application plane 231 more than 120 degree Clearance G between positive stress surface 92A so that jaw larynx 25 does not contact working substance 90, during avoiding switching working substance 90, jaw Larynx 25 applies force to working substance 90 and the disengaging of working substance 90 is forced to pull mouth 26, and auxiliary folder 22 is firmly connected working substance 90.Portion 221 of dodging allows the first reversed stress surface 91B of working substance 90 to enter.

Be the continuity of Fig. 8 please continue to refer to Fig. 9, indicate working substance 90 by folder 22 drive and compared to Fig. 8 quilts Rotate clockwise 10 degree.Folder 22 is continued flexible deformation by the reaction force from working substance 90, at this time suffered by folder 22 Reaction force persistently becomes larger still less than its elastic limit, the flexible deformation of especially the first clamping jaw 23 so that the expansion of expansion slot 29 The curvature for opening wall 291 persistently becomes smaller, that is, is less than the curvature that wall 291 is expanded in Fig. 8, but still greater than the sliding wall of arc chute 27 271 curvature, at this time the first switching face 32 of sliding block 30 be connected to the 4th positive stress surface 94A of working substance 90, the of sliding block 30 Two switching faces 33 are connected to the third forward direction stress surface 93A of working substance 90, and the force application plane 231 of the first clamping jaw 23 abuts work The positive stress surface 91A of the first of object 90, makes folder 22 remain to firmly be connected simultaneously switching working substance 90, and expansion slot 29 faces work The positive stress surface 92A of the second of object 90, by the extension of the force application plane 231 of the guiding face 251 and the first clamping jaw 23 of jaw larynx 25 Between between angle α and guiding face 251 between the P231 of face more than 120 degree and the second positive stress surface 92A of working substance 90 Gap G so that jaw larynx 25 does not contact working substance 90, and during avoiding switching working substance 90, jaw larynx 25 applies force to work Object 90 and force the disengaging of working substance 90 to pull mouth 26, auxiliary folder 22 is firmly connected working substance 90, and portion 221 of dodging allows working substance 90 the first reversed stress surface 91B enters.

Please continue to refer to Figure 10, it is the continuity of Fig. 9, indicates under the demand of higher torsion, user pulls grip part 21, so that folder 22 is rotated with the center of circle of working substance 90, cause folder 22 by the reaction force from working substance 90 lasting bullet Property deformation, at this time reaction force suffered by folder 22 still less than its elastic limit, the especially flexible deformation of the first clamping jaw 23 continue Become larger so that the curvature of the expansion wall 291 of expansion slot 29 persistently becomes smaller, that is, is less than the curvature that wall 291 is expanded in Fig. 9, but still big In 271 curvature of sliding wall of arc chute 27, the first switching face 32 of sliding block 30 is connected to the 4th positive of working substance 90 at this time The second switching face 33 of stress surface 94A, sliding block 30 are connected to the reversed stress of third forward direction stress surface 93A and second of working substance 90 End angle C between the 92B of face, and the force application plane 231 of the first clamping jaw 23 abuts the first positive stress surface 91A of working substance 90, makes Folder 22 remains to firmly be connected and switching working substance 90, but the first forward direction stress surface 91A and the 6th of working substance 90 is instead at this time To the phases between the force application plane 231 and the portion of dodging 221 of very close first clamping jaw 23 of the end angle C between stress surface 96B Junction, expansion slot 29 are pressed from both sides in face of the second positive stress surface 92A of working substance 90 by the guiding face 251 and first of jaw larynx 25 The of angle α and guiding face 251 between the extended surface P231 of the force application plane 231 of pawl 23 more than 120 degree and working substance 90 Clearance G between two positive stress surface 92A so that jaw larynx 25 does not contact working substance 90, during avoiding switching working substance 90, Jaw larynx 25 applies force to working substance 90 and the disengaging of working substance 90 is forced to pull mouth 26, and auxiliary folder 22 is firmly connected working substance 90.Portion 221 of dodging allows the first reversed stress surface 91B of working substance 90 to enter.

Please continue to refer to Figure 11, it is the continuity of Figure 10, indicates under the demand of higher torsion, user pulls grip part 21, so that folder 22 is rotated with the center of circle of working substance 90, cause folder 22 by the reaction force from working substance 90 lasting bullet Property deformation, reaction force suffered by folder 22 is to reach folder still less than its elastic limit, but already close to its elastic limit at this time The curvature of the flexible deformation critical value of jaw 22, the expansion wall 291 of expansion slot 29 becomes smaller, that is, the expansion wall 291 of expansion slot 29 is bent The limiting value that rate can become smaller in the elastic limit of folder 22, but the minimum limit value of its curvature is still greater than arc chute 27 271 curvature of sliding wall, increase folder 22 in the effect of elastic limit intramedullary expansion, especially greatly by the setting of expansion slot 29 It is separation that width, which increases with flange 292, and folder 22 has the effect of the first part of the first clamping jaw 23 in elastic limit intramedullary expansion, Especially the first clamping jaw 23 is in the effect of elastic limit intramedullary expansion so that in this case, the diagonal distance D90 of working substance 90 is small Minimum range SD between the first switching face 32 and the force application plane 231 of the first clamping jaw 23 of sliding block 30, i.e. the first switching face Minimum range SD between 32 an extended surface P32 and the extended surface P231 of force application plane 231, leads to the first of working substance 90 End angle C between the positive reversed stress surface 96B of stress surface 91A and the 6th can cross applying for the first clamping jaw 23 under high torsion Power plane 231 and enter and dodge portion 221, the first switching face 32 of sliding block 30 is detached from the 4th positive stress surface of working substance 90 at this time 94A, and the second switching face 33 of sliding block 30 abuts the second reversed stress surface 92B and third forward direction stress surface 93A of working substance 90 Between end angle C, avoid sliding block 30 and the first clamping jaw 23 that from can not bearing to come from the reaction force of working substance 90 and generate destruction. Expansion slot 29 faces the second positive stress surface 92A of working substance 90, by the guiding face 251 of jaw larynx 25 and applying for the first clamping jaw 23 Angle α and guiding face 251 between the extended surface P231 of power plane 231 more than 120 degree and working substance 90 second it is positive by Clearance G between the 92A of power face so that between the first reversed stress surface 96B of forward direction stress surface 91A and the 6th of working substance 90 After end angle C crosses the force application plane 231 of the first clamping jaw 23, even if the second forward direction stress surface 92A and first of working substance 90 is anti- End angle C meetings between the end reversed stress surface 96B of the forward direction stress surface 91A and the 6th of angle C or first between stress surface 91B Contact guiding face 251, the end angle C of working substance 90 is remained to by the guiding of guiding face 251 and can be kept suitable between mouth 26 with pulling The relative motion of smooth ground.

It is the continuity of Figure 11 please continue to refer to Figure 12, when the first forward direction stress surface 91A and the 6th of working substance 90 is reversed End angle C between stress surface 96B has passed over the force application plane 231 of the first clamping jaw 23 under high torsion and enters portion 221 of dodging, User then switching working substance 90, the stopping of working substance 90 can not be applied in active force again, and since folder 22 is in switching working substance During 90, suffered reaction force is less than its elastic limit, therefore after the stopping of working substance 90 is applied in active force, Figure 12's 22 elasticity of folder is restored back to the shape of folder 22 in Fig. 4.

It fully can expressly be shown by the continuous action schematic diagram of Fig. 5 to Figure 12 when high tenacity height of the present invention uses the longevity The function fast-open spanner 10 of life makes folder 22 in deformable within elastic limits, because of expansion slot 29 with high torsion switching working substance 90 292 installation position of flange be located at the center of folder 22, in other words, by the junction of traditional open-end wrench easy fracture, then bestow One radian is processed, and is expansion slot 29, and when the 80% of force to 22 rigid of folder, expansion slot 29 makes folder 22 start bullet Property expansion, until exerting a force 100% or more more than 22 rigid of folder, the limit for reaching the elasticity of folder 22 just will produce fracture Possibility, it is most important that, the life test of the function fast-open spanner 10 of the high service life of invention high tenacity is than traditional opening Spanner is even more to be higher by 30%.Traditional open-end wrench is effectively prevented to i.e. meeting moment is disconnected between the 80% to 100% of rigid The problem of splitting.

Therefore the design philosophy of tool, not being not to be set with regard to one by force, what tool was stressed is strong band toughness, is only last winner, This is the ignorant KnowHow (professional knowledge, technology, secret formula) of institute of general low order tools factory, this is also foreign tool ratio always Our strong places.

Expansion slot 29, which increases folder 22, has the effect of the first part of the first clamping jaw 23 in elastic limit intramedullary expansion, makes the The deflection of one clamping jaw 23 is more than the second clamping jaw 24, and also because of the second clamping jaw 24, possessed width is more than first in the width direction Clamping jaw 23 in the width direction possessed by width so that the reaction force of working substance 90 can accordingly be come from and gradually expand by pulling mouth 26 , increase folder 22 in the effect of elastic limit intramedullary expansion by the setting of expansion slot 29, the first clamping jaw is especially significantly increased 23 in the effect of elastic limit intramedullary expansion, when folder 22 reaches flexible deformation critical value, makes the diagonal distance D90 of working substance 90 Less than the minimum range SD between the first switching face 32 and the force application plane 231 of the first clamping jaw 23 of sliding block 30, lead to working substance End angle C between 90 the first reversed stress surface 96B of forward direction stress surface 91A and the 6th can cross the first folder under high torsion The force application plane 231 of pawl 23 and enter portion 221 of dodging, avoid sliding block 30 and the first clamping jaw 23 that from can not bearing to come from working substance 90 Reaction force and the effect of generate destruction, reach high tenacity and high service life.

In addition, between the extended surface P231 of 23 force application plane 231 of guiding face 251 and the first clamping jaw of jaw larynx 25 have be more than 120 degree of angle α, and it is provided with clearance G between guiding face 251 and the second positive stress surface 92A of working substance 90 so that jaw larynx 25 do not contact working substance 90 always during switching working substance 90, and jaw larynx 25 is avoided to apply force to working substance 90 and compel The disengaging of working substance 90 is set to pull mouth 26, auxiliary folder 22 is firmly connected working substance 90, and by guiding face 251 and extended surface There is angle α more than 120 degree, structure was changed multi-angle (angle α is not equal to when avoiding the processing of folder 22 between P231 120 degree, and it is more than 120 degree) in the case of, acquisition avoids jaw larynx 25 that working substance 90 is forced to be detached from the effect of pulling mouth 26.

And surpass by between the guiding face of jaw larynx 25 251 and the extended surface P231 of the force application plane 231 of the first clamping jaw 23 Cross the clearance G between 120 degree of angle α and the second positive stress surface 92A of guiding face 251 and working substance 90 so that work The force that end angle C between the first reversed stress surface 96B of forward direction stress surface 91A and the 6th of object 90 crosses the first clamping jaw 23 is flat Behind face 231, even if the end angle C between the second reversed stress surface 91B of forward direction stress surface 92A and first of working substance 90 or End angle C between the one reversed stress surface 96B of forward direction stress surface 91A and the 6th can contact guiding face 251, the end angle of working substance 90 C is remained to by the guiding of guiding face 251 and can be kept swimmingly relative motion between mouth 26 with pulling.

Described above to be merely exemplary for the purpose of the present invention, and not restrictive, those of ordinary skill in the art understand, In the case where not departing from spirit and scope defined by claims appended below, many modifications can be made, are changed, or wait Effect, but fall in protection scope of the present invention.

Claims

1. a kind of function fast-open spanner of the high service life of high tenacity, which is characterized in that including：

One ontology a comprising grip part and a folder for being set to the grip part one end, the folder are held in contrast to this The one end for holding portion forms first clamping jaw being separated from each other and second clamping jaw, the folder in first clamping jaw with this second A jaw larynx is formed between clamping jaw, the space that first clamping jaw, second clamping jaw and the jaw larynx are surrounded, which is formed, to be suitable for for work Enter one of crop pulls mouth, and the first positive stress surface of working substance and the first reversed stress surface are coplanar, working substance first just It is located at the two opposite sides of working substance to stress surface and the 4th positive stress surface, the first reversed stress surface of working substance and the 6th is reversely End angle is formed with 120 degree of angle between stress surface, first clamping jaw in face of this with pulling mouth and towards second clamping jaw A force application plane, which forms a portion of dodging between the force application plane and the jaw larynx, setting one in the folder Arc chute, the arc chute are set to the side that second clamping jaw pulls mouth relative to this, and a guide posts are fixed to be placed in the arc One expansion slot is more set in shape sliding slot, in the folder, which is set to the side that first clamping jaw pulls mouth relative to this；

One sliding block, can camber line be slidingly arranged at the arc chute, the sliding block have a reciprocal first end with There is the first end of one second end, the sliding block emergence to go out a first switching face outside the arc chute, sliding block setting one The guide channel of a arc-shaped shape in the guide channel is extended through for the guide posts, is detached from sliding slot, which has to prevent limited slip block One abutment end, when the sliding block is in free position, the abutment end of the guide channel is contacted with the guide posts；And

One elastic device, is set between the ontology and the sliding block, and the sliding block is enable to automatically return to free position；

When the folder is not yet connected working substance, which is located at free position, and the first switching face of the sliding block stretches into this and pulls mouth It is interior, and the force application plane of the first switching face of the sliding block and first clamping jaw is in non-parallel state；

When the folder is connected working substance and non-switching working substance, which is connected to work with the force application plane of first clamping jaw The first end of the positive stress surface of the first of object, the sliding block is connected to the 4th positive stress surface of working substance, which faces work The second reversed stress surface of crop；

When the folder switching working substance makes the folder generate flexible deformation, which increases the folder in expanding in elastic limit Effect so that the end angle between the first positive stress surface of working substance and the 6th reversed stress surface can cross this first The force application plane of clamping jaw and into the portion of dodging, avoid the sliding block and first clamping jaw that from can not bearing the anti-work for coming from working substance Firmly generate destruction.

2. the function fast-open spanner of the high service life of high tenacity as described in claim 1, which is characterized in that the jaw larynx has face A guiding face of mouth is pulled to this, forms a gap between the guiding face and the second positive stress surface of working substance, this is dodged Portion is formed between the force application plane and the guiding face, is had between the guiding face of the jaw larynx and the force application plane extended surface There are one the angles more than 120 degree so that the end angle between the positive stress surface of the first of working substance and the 6th reversed stress surface After the force application plane for crossing first clamping jaw, by the setting in the guiding face and the gap so that working substance pulls mouth energy with this Enough swimmingly relative motions.

3. the function fast-open spanner of the high service life of high tenacity as claimed in claim 2, which is characterized in that the guiding of the jaw larynx Angle between face and the extended surface of the force application plane is more than 130 degree.

4. the function fast-open spanner of the high service life of high tenacity as claimed in claim 3, which is characterized in that the expansion slot is in arc Shape is simultaneously connected with the arc chute, which forms a flange in the connection of the arc chute and the expansion slot, should One end that flange makes the arc chute be adjacent to the expansion slot is not connected to the internal face that the jaw larynx pulls mouth in face of this.

5. the function fast-open spanner of the high service life of high tenacity as claimed in claim 4, which is characterized in that the arc chute has There are one the sliding wall of concave arc shape, which does not open up other pore space structures and is in concave arc planar, and there are one expansion slot tools The expansion wall of concave arc shape, the expansion wall do not open up other pore space structures and are in concave arc planar, and the curvature of the expansion wall is more than the cunning Move the curvature of wall.

6. the function fast-open spanner of the high service life of high tenacity as claimed in claim 5, which is characterized in that the expansion slot has One the first stop wall being located above the expansion wall is located at one below the expansion wall and relative to first stop wall Second stop wall, first stop wall and second stop wall are parallel to each other, and the arc chute and the expansion slot are having the same One spacing.

7. the function fast-open spanner of the high service life of high tenacity as claimed in claim 6, which is characterized in that the arc chute has There are one the first supporting walls being located above the sliding wall and one to be located at below the sliding wall and relative to first supporting walls The second supporting walls, first supporting walls and second supporting walls are parallel to each other, the both ends of the guide posts be individually fixed in this The top of one supporting walls and second supporting walls, the sliding block forms a top surface, and the lower section of the sliding block forms a bottom surface, the cunning The top surface and bottom surface of block are by first supporting walls and second supporting walls support symmetrical above and below, therefore the sliding block is in the arc chute Shaking will not be led to the problem of when interior camber line sliding, the stability in open-end wrench use can be improved, which runs through The top surface and the bottom surface, and other pore space structures are not opened up in the guide channel, there are one in contrast to abutment end for guide channel tool Top tug end, elastic device both ends are resisted against respectively between the guide posts and the top tug end of the guide channel, one lubrication of expansion slot setting Ointment, the lubricating cream are coated on the expansion wall and are located at when the sliding block is slided relative to the arc chute camber line with the flange The lubricating cream of the flange can be drawn by the slide surface from the second end of the sliding block and enter the slide surface and the sliding wall Between, reduce the resistance to sliding between the sliding block and the arc chute.

8. the function fast-open spanner of the high service life of high tenacity as claimed in claim 7, which is characterized in that the first of the sliding block It holds and each extends over an alar part in the top surface and the bottom surface, which has inner and outer, can on the inside of the alar part of the sliding block Switching working substance, the open-end wrench can make working substance be contacted with the sliding block with the height on entire head through the alar part First switching face and the alar part, increase the contact area between working substance and the sliding block, the outside of the alar part does not contact this completely Ontology makes the alar part not generate frictional resistance between the ontology, make the reciprocating motion of the sliding block more smooth with it is flexible, no The problem of easily blocking.

9. the function fast-open spanner of the high service life of high tenacity as claimed in claim 8, which is characterized in that the first switching face Both sides respectively extend an expanding surface, the inside of the alar part forms the expanding surface, which is formed in the first switching face On the same face, when the folder switching working substance, the outside of the alar part does not contact the folder completely, make the overhanging action of the sliding block with Retraction it is all quite smooth with it is flexible, the problem of being not susceptible to block, make working substance with entire head through the alar part Height is contacted with the first switching face and the expanding surface of the sliding block, increases the contact area between working substance and the sliding block.

10. the function fast-open spanner of the high service life of high tenacity as described in any one of claim 5 to 9, which is characterized in that It is empty that a standby pressure is generated when the folder is connected working substance and non-switching working substance, between the abutment end and guide posts of the guide channel Between, there are one arc length, the arc length in the standby pressure space to be more than the dimensional tolerance of working substance for standby pressure space tool；

When folder switching working substance makes folder generate flexible deformation, ontology is rotated relative to working substance, the standby pressure space of sliding block Sliding block can be allowed ontology will not to be followed to rotate, standby pressure space can be such that the first end of sliding block is still connected to when folder elastic dilatation The positive stress surface of the 4th of working substance.

11. the function fast-open spanner of the high service life of high tenacity as claimed in claim 10, which is characterized in that the standby pressure space Arc length be more than the guiding column diameter half.

12. the function fast-open spanner of the high service life of high tenacity as claimed in claim 11, which is characterized in that when the folder is held in the mouth When connecing working substance and non-switching working substance, the second end of sliding block is connected to the third forward direction stress surface of working substance, the standby pressure space It can make force application plane and the first switching face respective the first positive stress for being connected to working substance when the folder elastic dilatation Face and the 4th positive stress surface.

13. the function fast-open spanner of the high service life of high tenacity as claimed in claim 12, which is characterized in that when the folder is held in the mouth When connecing working substance and non-switching working substance, one is formed between the first switching face of the sliding block and the 4th of working substance the positive stress surface A standby pressure angle, the standby pressure angle can allow the ontology and the sliding block gradually relative to work when the folder flexible deformation Crop rotates, and the first switching face of the sliding block is made to be connected to the 4th positive stress surface of working substance so that the first switching face with 4th positive stress surface forming face contact.

14. the function fast-open spanner of the high service life of high tenacity as claimed in claim 13, which is characterized in that the standby pressure angle More than 2 degree and it is less than 4 degree.

15. the function fast-open spanner of the high service life of high tenacity as claimed in claim 14, which is characterized in that the sliding block is in this First switching face recessed at least one V-shaped alveolus, the alveolus can improve the first switching face and the working substance of the sliding block Frictional force between 4th positive stress surface.

16. the function fast-open spanner of the high service life of high tenacity as claimed in claim 15, which is characterized in that the one of the sliding block Side forms the slide surface of a convex, which can slide on the sliding wall of the arc chute, and the second of the sliding block There is emergence to go out a second switching face outside the arc chute at end, which is formed in the cunning with the second switching face For block 30 in contrast to the side of slide surface 31, which forms an avoidance between the first switching face and the second switching face Portion, the avoidance unit are suitable for allowing the reversed stress surface of the third of working substance to enter.

17. the function fast-open spanner of the high service life of high tenacity as claimed in claim 16, which is characterized in that the cunning of the sliding block The curvature in shifting face is equal to the curvature of the sliding wall of the arc chute, and the slide surface of the sliding block can be swimmingly in the arc chute Slide slip at wall, and the slide surface be capable of large area the reaction force of working substance is passed to the sliding wall, with dispersion The stress of the sliding block and avoid the problem that stress concentration, the sliding block can bear when relatively improving the ontology switching working substance Torsion.

18. the function fast-open spanner of the high service life of high tenacity as claimed in claim 17, which is characterized in that the guide channel Curvature is identical as the sliding curvature of wall of the arc chute, therefore between the guide posts in the guide channel of the sliding block and the arc chute The case where capable of generating swimmingly with respect to camber line shuffle effect, not having interference, occurs.

19. the function fast-open spanner of the high service life of high tenacity as claimed in any one of claims 1-9 wherein, which is characterized in that First clamping jaw and second clamping jaw it is relative to each other and it is integrally formed be set to the folder both sides, second clamping jaw is along width side It is more than first clamping jaw possessed width in the width direction to possessed width, therefore the folder has good structure strong Degree, therefore the torsion that the folder is born can be increased.

20. the function fast-open spanner of the high service life of high tenacity as described in any one of claim 7 to 9, the wherein elasticity Device includes an elastomer being set in the guide channel, and the top surface of the sliding block is parallel to each other with bottom surface and the sliding block is made to have One height, the height of the sliding block are less than or equal to the spacing of the arc chute, which runs through the top surface and the bottom surface, therefore There are one slot height etc. for guide channel tool in the height of the sliding block, and there are one groove width, the groove width of the guide channel is more than guide channel tool Or a diameter equal to the guide posts, tall and big 1.5 times in groove width of the slot of the guide channel, the elastomer of the elastic device is being set The rear tool in the guide channel is placed in there are one height, the height of the elastomer is not more than the slot height of the guide channel, the elastomer Height is more than the groove width of the guide channel, and the slot of the guide channel of the height more than 0.5 times of the elastomer is high, which is Z-type Shrapnel, at least one Metal Flake storage power unit is arranged between the both ends of the elastomer, which is in the section of V-shape The storage power unit of structure, the elastomer is set to first foot and the crus secunda by first foot, a crus secunda and one Between compression unit formed, which can store first foot and the crus secunda by compressed energy, make the storage power Unit has elastic reset ability, each first foot for storing power unit is connected to another crus secunda for storing power unit so that There is the compression unit of each storage power unit elastic reset ability, the first foot of the elastomer one end to be connected to the guiding The crus secunda of column, the elastomer other end is connected to the top tug end of the guide channel.